The Ralli Wolf RDA-3100 is a high-capacity stud welding machine built for heavy industrial applications like steel bridge manufacturing, heat exchanger production, construction and deck sheet welding. IGBT inverter technology gives it excellent line voltage compensation and stepless current control, so weld quality stays consistent even as incoming power fluctuates — a common issue on large industrial sites drawing from shared power infrastructure.

Running on a 400V ± 15%, 3-phase supply at 50/60Hz, the RDA-3100 delivers an output range of 250–3150A, with a rated output of 3150A at an 84% duty cycle — meaning it can sustain near-maximum output for the large majority of a working cycle without overheating, a critical factor for continuous heavy-duty production welding rather than intermittent light use.

It handles stud diameters from ø6mm to ø32mm, covering a wide range of structural and heavy fabrication stud sizes, with weld time adjustable from 0.01 to 4.0 seconds for precise control across different stud sizes and materials. Operator-friendly front panel controls with digital meters make it straightforward to monitor and adjust settings on the shop floor, while a simplified internal circuit design keeps maintenance more manageable than more complex industrial welding systems.

Key Features

• IGBT inverter technology with excellent line voltage compensation
• Stepless current control for consistent, high-quality welds
• High rated output: 3150A at 84% duty cycle
• Wide stud diameter range: ø6mm to ø32mm
• Adjustable weld time from 0.01 to 4.0 seconds
• Operator-friendly front panel with digital meters
• Simplified circuit design for easier maintenance

Technical Specification

Application

• Steel bridge manufacturing
• Heat exchanger production
• Construction site stud welding
• Deck sheet welding in shipbuilding and structural work